<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 添加角色按钮 -->
      <el-button type="primary" @click="rolesDialogVisible = true"
        >添加角色</el-button
      >
      <!-- 表格区域 -->
      <el-table :data="rolesList" style="width: 100%" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                {{ scope.row }}

                </pre
            > -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="roleName" label="角色名称" width="260">
        </el-table-column>
        <el-table-column prop="roleDesc" label="角色描述" width="260">
        </el-table-column>
        <el-table-column prop="address" label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
              >编辑</el-button
            >
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeRolesById(scope.row.id)"
              >删除</el-button
            >
            <!-- 分配角色按钮 -->
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>

      <!-- 添加角色的对话框区域 -->
      <el-dialog
        title="添加角色"
        :visible.sync="rolesDialogVisible"
        width="50%"
        @closed="rolesDialogClosed"
      >
        <span>
          <el-form
            :rules="rolesFormRules"
            ref="rolesFormRef"
            :model="rolesForm"
            label-width="80px"
          >
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="rolesForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
              <el-input v-model="rolesForm.roleDesc"></el-input>
            </el-form-item>
          </el-form>
        </span>
        <span slot="footer" class="dialog-footer">
          <el-button @click="rolesDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addRolesForm">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 编辑角色的对话框区域 -->
      <el-dialog
        title="添加角色"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <span>
          <el-form
            :rules="editRoleFormRules"
            ref="editRolesFormRef"
            :model="editRolesForm"
            label-width="80px"
          >
            <el-form-item label="角色id">
              <el-input v-model="editRolesForm.roleId" disabled></el-input>
            </el-form-item>
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="editRolesForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
              <el-input v-model="editRolesForm.roleDesc"></el-input>
            </el-form-item>
          </el-form>
        </span>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editRolesFormFun">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配权限的对话框 -->
      <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%"
        @close="setRightDialogClosed"
      >
        <el-tree
          ref="treeRef"
          :data="rightsList"
          :props="treeProps"
          show-checkbox
          node-key="id"
          default-expand-all
          :default-checked-keys="defKeys"
        ></el-tree>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRightDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 角色管理列表
      rolesList: [],
      //   控制添加角色的对话框区域的显示与隐藏
      rolesDialogVisible: false,
      //   添加角色的信息
      rolesForm: {
        roleName: "",
        roleDesc: "",
      },
      //   添加角色的表单校验
      rolesFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
        ],
        roleDesc: [
          { required: true, message: "请输入角色描述", trigger: "blur" },
        ],
      },
      //   控制编辑角色对话框的显示与隐藏
      editDialogVisible: false,
      //   编辑的角色信息
      editRolesForm: {},
      //   编辑角色信息的校验规则
      editRoleFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
        ],
        roleDesc: [
          { required: true, message: "请输入角色描述", trigger: "blur" },
        ],
      },
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所有权限数据
      rightsList: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: "authName",
        children: "children",
      },
      // 默认选中的节点的Id值数组
      defKeys: [],
      // 当前即将分配权限的角色id
      roleId: "",
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    // 获取角色管理列表
    async getRolesList() {
      const { data: res } = await this.$http.get("/roles");
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色管理列表失败");
      }
      this.rolesList = res.data;
    },
    // 监听对话框关闭的回调
    rolesDialogClosed() {
      this.$refs.rolesFormRef.resetFields();
    },
    // 添加角色的函数
    addRolesForm() {
      this.$refs.rolesFormRef.validate(async (valid) => {
        console.log(valid);
        if (!valid) return this.$message.error("请正确输入角色的信息");
        const { data: res } = await this.$http.post("/roles", this.rolesForm);
        console.log(res);
        if (res.meta.status !== 201) {
          return this.$message.error("添加角色失败");
        }
        this.$message.success("添加角色成功");
        this.getRolesList();
        this.rolesDialogVisible = false;
      });
    },
    // 点击编辑显示对话框
    async showEditDialog(id) {
      // console.log(id);
      const { data: res } = await this.$http.get(`/roles/${id}`);
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色信息失败");
      }
      this.editRolesForm = res.data;
      this.editDialogVisible = true;
    },
    // 点击确定提交修改
    async editRolesFormFun() {
      const { data: res } = await this.$http.put(
        `/roles/${this.editRolesForm.roleId}`,
        {
          roleName: this.editRolesForm.roleName,
          roleDesc: this.editRolesForm.roleDesc,
        }
      );
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("更新角色信息失败");
      }
      this.getRolesList();
      this.editDialogVisible = false;
    },
    // 监听编辑对话框的关闭事件
    editDialogClosed() {
      this.$refs.editRolesFormRef.resetFields();
    },
    // 删除角色函数
    removeRolesById(id) {
      // console.log(id);
      //   const { data: res } = await this.$http.delete(`/roles/${id}`);
      //   console.log(res);
      //   if (res.meta.status !== 200) {
      //     return this.$message.error("删除角色失败");
      //   }
      //   this.$message.success("删除角色成功");
      this.$confirm("此操作将永久删除该角色, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(`/roles/${id}`);
          //   console.log(res);
          this.$message({
            type: "success",
            message: "删除成功!",
          });
          this.getRolesList();
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    // 根据id删除对应权限
    async removeRightById(role, rightId) {
      // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      // console.log(confirmResult);

      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      // console.log("确认了删除");
      const { data: res } = await this.$http.delete(
        `/roles/${role.id}/rights/${rightId}`
      );
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败");
      }
      // this.getRolesList()
      role.children = res.data;
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id;
      // 获取所有权限数据
      const { data: res } = await this.$http.get("/rights/tree");
      // console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("获取权限失败");
      }
      this.rightsList = res.data;
      // console.log(this.rightsList);

      // 递归获取三级节点的id
      // console.log(role);

      this.getLeafKeys(role, this.defKeys);
      // console.log(1111);

      this.setRightDialogVisible = true;
    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys数组中
    getLeafKeys(node, arr) {
      // 如果当前node节点不包含children属性，则是三级节点
      // console.log(this.defKeys);
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => {
        // console.log(this);
        // console.log(item);
        return this.getLeafKeys(item, arr);
      });
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = [];
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      // console.log(keys);
      const idStr = keys.join(",");
      // console.log(idStr);

      // console.log(this.roleId);

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        {
          rids: idStr,
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败！");
      }
      this.$message.success("分配权限成功");
      this.getRolesList();
      // console.log(res);
      this.setRightDialogVisible = false;
    },
  },
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>